A chilling phone call between gangsters who plotted to murder Justin Bieber and castrate him with a pair of garden shears has been released.

Jailed Dana Martin, who has a tattoo of the star on his leg, is accused of offering the reward after recruiting two men to kidnap the singer along with his body guard and two other victims.

According to police Martin hatched the grisly plot because he felt Bieber had snubbed his efforts to contact him.

The phone call, first obtained by KOAT 7 News in Albuquerque, New Mexico, was placed from a Las Cruces prison last November by Martin, who is currently serving two life sentences for raping and killing teenage girl.

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Target: Two men who planned to kill and castrate Justin Bieber after
his November 28 concert at Madison Square Garden in New York (pictured) were offered $2,500 for each of the singer's testicles it has been claimed

Plot: Dana Martin (left) is said to be obsessed with the pop singer, and has a tattoo of Bieber on his leg; he recruited Mark Staake (right) to carry out the plot

Martin met Mark Staake, a fellow
inmate at Las Cruces state prison in New Mexico years ago. While there,
Staake allegedly agreed to enlist his own nephew Tanner Ruane in order to carry out the
murderous plot.

In audio released by KOAT, Martin tells Ruane: '[Mark's] going to kill the pit bulls and you're going to castrate them.'

'Pit bulls' was the code word for Bieber and his bodyguard, police claim.

Ruane mentions the 'hedge clippers' he was planning to use to execute the castration.

He ordered his accomplices to first
strangle the victims with a paisley tie as it was his 'calling card'
which he had used in previous attacks.

He can be heard saying: 'Tie it really really tight. Knot it in the front once, really tight, put it in a knot. That cuts off the oxygen, and then tie it in the back again, really tight. That seals the deal.'

Mastermind: Dana Martin was arrested for raping and killing a 15-year-old girl in 2000 (seen here), but since spending time behind bars, his newest teenage target appears to be the Canadian singer

Criminal relatives: Mark Staake (left) met Martin in prison and agreed to take on the assassination plot with the help of his nephew Tanner Ruane (right)

Staake and Ruane were allegedly poised
to strike while the Canadian singer was in New York for a performance at
Madison Square Garden on November 28. But for unknown reasons, Martin told
jail wardens about the plot and Staake, 41, was arrested in Vermont on
an unrelated outstanding warrant while driving with 23-year-old Ruane.

According to court documents previously obtained by the SunNewspaper, when Mr
Martin asked what Staake had bought to castrate the victims, Ruane said
he had bought a pair of hand-held hedge clippers.

When Ruane was arrested in New York on
November 20 police discovered a brand new pair of Fiskars Durasharp
pruning shears in his car.

A police document stated: 'In response
to Mr Staake’s reluctance to follow through with the castrations, Mr
Ruane stated he was going to do it and get ‘five large for each one I
get’. Mr Martin confirmed that Mr Ruane was going to get $2,500 per
testicle.'

Martin is currently serving two life sentences for raping and killing a 15-year-old girl in 2000.

In an affidavit enclosed with Tanner
Ruane's warrant Martin explained that had plotted the attack because he
was upset that Bieber had snubbed his attempts to make contact.

According to the arrest warrant Martin
had asked Ruane if they had bags to put the testicles in and had
suggested hiding them in the engine compartment of the car to avoid
detection should they get pulled over by police.

The court papers state: 'When asked to
explain why Victim 3 (Bieber) was to be killed, Mr Martin stated that
Victim 3 has a measure of fame and that he had become infatuated with
Victim 3.

Turning against them: Martin was the one who reported the plot to police, even though he planned the whole operation, including the instruction to use paisley ties (right) since those were his 'calling card'

'Mr Martin stated he had attempted to solicit correspondence on numerous occasions and that Victim 3 never returned in kind.

'This perceived slight made Mr Martin
upset and, coupled with Mr Martin’s perception of being a ‘nobody’ in
prison, led him to begin plotting the kidnap and murder.'

As Martin is already serving life
sentences it is not known if he will face further charges. But a New
York State Police spokesman said he may be responsible for other
kidnaps and murders across America.

A spokesman for Bieber, 18, who has sold more than 15million albums since bursting on the scene in 2009, said every precaution was taken to protect the star and his fans.